please sir fast

A metal plate has the shape of an isosceles triangle with base of length 4 feet and the remaining sides each of length 5 feet. It is standing vertically on its 4-foot base at the bottom of a swimming pool. The depth of the water in the pool is 10 feet. Find the value (to 3 decimal places) of the force, in pounds, of the water on the plate. Assume that the density of the water in the pool is 62.5 lbs. ft3.